TWI601475B - Heat dissipation system with air sensation function - Google Patents

Description

Gas sensing heat dissipation system

The invention relates to a heat dissipation system, in particular to a gas sensing heat dissipation system capable of controlling a plurality of fans to flow out a uniform airflow.

With the development and advancement of network technology, the market and demand of servers are also huge. The biggest feature of the server host is its powerful computing power, and the more powerful the computing host, its operation. The heat generated during the period is relatively high. If it is long-term, it will affect the performance of the server. In the long run, the server may be damaged. Therefore, in order to solve the above problems, the server is usually placed in a well-ventilated cabinet. . Referring to FIG. 7 , a conventional cabinet structure capable of accommodating various electronic devices is mainly provided. The main frame 51 has a receiving space for accommodating various electronic devices (such as a server or other information device), and one side of the cabinet 51 is mounted. A plurality of fans 52 are provided to drive the air flow by the fans 52, so that the generated airflow carries the heat generated by the electronic devices to the outside of the cabinet 51, so as to reduce the temperature of each electronic device. In addition, because the heat dissipation requirement of the cabinet 51 is increased, the plurality of fans 52 on the cabinet 51 are usually connected in parallel to increase the amount of heat dissipation. However, each fan 52 is disposed at a different position on one side of the cabinet 51, so that each fan 52 The outflow air volume (or the exhaust air volume) is different, so that the airflow speed of each fan will be different. Therefore, the airflow speed will have a change in air pressure, so that the overall flow field at the air outlet of the fan 52 is different in magnitude. The eddy 6 is the source of noise.

Accordingly, in order to effectively solve the above problems, it is an object of the present invention to provide a gas sensing heat dissipation system having the effect of reducing noise. Another object of the present invention is to provide a gas that can be controlled by an external control device to adjust the rotational speed of each fan on a body, thereby changing the airflow velocity (or airflow velocity), thereby achieving the effect of each fan flowing out of a uniform airflow. Sensing heat dissipation system. Another object of the present invention is to provide a gas sensing heat dissipation system that transmits the speed of each fan on a body, thereby changing the air flow rate (or air flow rate), thereby achieving the effect of a uniform airflow from each fan. In order to achieve the above object, the present invention provides a gas sensing heat dissipation system including a body, a plurality of gas sensing units, a plurality of fans, and an external control device, the body having at least one mounting surface and a receiving space, The gas sensing unit is disposed on the corresponding fan, and the gas sensing unit is configured to detect the gas corresponding to each fan. a state (such as a gas pressure or a gas wind speed) to generate a gas sensing signal, and the external control device is coupled to the fan and the gas sensing unit, the external control device transmitting according to the gas sensing unit The data in the gas sensing signal is compared with a predetermined data. If the data in the gas sensing signal of at least one of the fans is different, the external control device controls to adjust the rotation speed of at least one of the fans. Through the design of the system of the present invention, it is effective to let each fan flow out a uniform airflow to effectively achieve the effect of reducing noise. The present invention further provides a heat dissipation system with gas sensing, comprising a body, a plurality of fans, and a plurality of gas sensing units, the body having at least one mounting surface and a receiving space, the fans being disposed on the corresponding mounting surface Each of the fans is provided with a processing unit for controlling the operation of the fan. The gas sensing units are disposed on the corresponding fans, and each of the gas senses is provided. The measuring unit is configured to detect a gas state corresponding to each fan (such as gas wind pressure or gas wind speed) to generate a gas sensing signal, and each gas sensing unit is connected to the processing unit of each fan; The processing unit of each fan performs a comparison process with the preset data according to the data in the gas sensing signals transmitted by the respective gas sensing units, if each processing unit compares the respective gas sensing signals Different from the preset data, the control adjusts the rotation speed of each fan, and the design of the system of the present invention makes it effective to let each fan flow a uniform airflow to effectively reduce the speed. Sound effects. In one implementation, each fan is provided with a frame body and a fan wheel, the frame body has an air inlet side, an air outlet side and a first-class road, and the flow channel is located between the air inlet side and the air outlet side, and The air inlet side communicates with the air outlet side, the flow channel and the receiving space, and the fan wheel is received in the flow channel of the frame body. In one implementation, the gas sensing units are disposed on the inner side of the frame at the air outlet side or the air inlet side. In one implementation, the gas sensing units are disposed on the inside of the frame within the flow channel. In one implementation, the external control device is housed in the housing space of the body and is located in a corresponding fan, and the external control device is a server or a notebook computer or a smart mobile device or a computer. In one implementation, the processing unit is a processor or a microcontroller. In one implementation, each of the gas sensing units is a wind speed sensor for detecting a wind speed of the gas corresponding to the fan to generate the gas sensing signal and the data in the gas sensing signal. A wind speed data is included, and the preset data includes a preset wind speed data. In one implementation, each of the gas sensing units is a pressure sensor for detecting a gas pressure corresponding to a fan to generate the gas sensing signal, and the gas sensing signal is The data includes a wind pressure data, and the preset data includes a preset wind pressure data. In one implementation, each of the gas sensing units includes a microcontroller, a pressure sensor, and a temperature sensor for detecting a gas pressure corresponding to the fan to generate a wind pressure a sensing signal, the temperature sensor is configured to detect a temperature corresponding to the ambient temperature of the fan to generate a temperature sensing signal, and the microcontroller calculates a temperature value of the temperature sensing signal and a calibration data to obtain a surrounding a temperature value, the ambient temperature value is further processed with a wind pressure value of the wind pressure sensing signal to generate the gas sensing signal, and the data in the gas sensing signal includes a corrected wind pressure data. The preset data includes a preset wind pressure data. In an implementation, if the external control device is the same as the preset data in the sensing signal of the fans, the external control device does not control the rotation speed of the fans. In one implementation, the mounting surface has a plurality of mounting holes that extend through the mounting surface and communicate with the receiving space, and the fans are mounted in corresponding mounting holes.

The above object of the present invention, as well as its structural and functional features, will be described in accordance with the preferred embodiments of the drawings. The present invention provides a heat dissipation system with gas sensing. Please refer to Figures 1, 2 and 4 for a combination and disassembly and block diagram of the first embodiment of the present invention, and reference is made to the 5C diagram. The gas sensing heat dissipation system includes a body 1, a plurality of fans 2, a plurality of gas sensing units 3, and an external control device 4. The body 1 is represented as a server cabinet in the embodiment, but is not limited thereto. In the specific implementation, it can also be a communication cabinet or other cabinets (such as system monitoring cabinets, broadcast system cabinets or telecom cabinets) that can accommodate multiple electronic devices. The housing 1 has at least one mounting surface 11 and a receiving space 13 for receiving a plurality of electronic devices (such as a server; not shown). The mounting surface 11 has a plurality of mounting holes. 111, the mounting holes 111 extend through the mounting surface 11, and each mounting hole 111 is disposed at different positions of the mounting surface 11, as shown in FIG. 2, three rows of longitudinal mounting holes 111 and three rows of lateral mounting holes 111. A plurality of mounting holes 111 each having a substantially rectangular shape are arranged. The fan 2 is disposed in the corresponding mounting hole 111 and opposite to the receiving space 13. The fan 2 in the embodiment represents nine fans 2 for generating the plurality of electronic devices in the body 1. The hot air is discharged to the outside of the body 1. In an alternative embodiment, the fans 2 can also be designed to direct outside air into the body 1 to forcibly dissipate heat from the plurality of electronic devices. Each of the fans 2 is provided with a frame 22 and a fan wheel 24. The frame 22 has an air inlet side 221, an air outlet side 222 and a first-class road 23, and the flow channel 23 is located at the air inlet side 221 and The wind side 222 is connected to the air outlet side 222 and the flow path 23 and the receiving space 13 , and the fan wheel 24 is received in the flow channel 23 of the frame 22 . The gas sensing unit 3 is disposed on the corresponding fan 2, and the gas sensing unit 3 is shown in the embodiment as a pressure sensor (or a wind pressure sensor). On one fan 2, and the gas sensing unit 3 (ie, the pressure sensor) is disposed on the inner side of the frame 22 at the air outlet side 222 of the fan 2 (as shown in FIG. 5C), each gas sense The measuring unit 3 is configured to detect the gas state corresponding to each fan 2 (such as the wind pressure of the air blown from the air outlet side of each fan) to generate a gas sensing signal, and the data in the gas sensing signal includes a Wind pressure data. In addition, in a specific implementation, the gas sensing unit 3 disposed in each of the fans 2 is not limited to the above one, and a plurality of gas sensing units 3 (such as 2 or 3) may be disposed in each fan 2. More than one gas sensing unit 3), for example, the gas sensing unit 3 or the flow of each fan 2 is disposed on the air outlet side 222 of each fan 2 and the inner side of the frame 22 at the air inlet side 221 The gas sensing unit 3 is disposed on the inner side of the tunnel 23 and the air outlet side 222 and the air intake side 221, thereby increasing the sensing accuracy through the plurality of gas sensing units 3. In another embodiment, as shown in FIG. 5A, each of the gas sensing units 3 is disposed on the inner side of the frame 22 at the wind inlet side 221 of each of the fans 2. In still another embodiment, as shown in FIG. 5B, each of the gas sensing units 3 is disposed on the inner side of the frame 22 in the flow path 23 of each of the fans 2. The external control device 4 is electrically connected to the fan 2 and the gas sensing unit 3, and the external control device 4 is represented as a notebook computer in the embodiment, and is accommodated in the housing 1 . Within the space 13, and corresponding to the fan 2. In an alternative embodiment, the external control device 4 can also select a smart mobile device or a computer. And the external control device 4 compares the data (such as wind pressure data) in the gas sensing signal transmitted by the gas sensing unit 3 with a preset data (such as preset wind pressure data) to compare Whether the wind pressure data in the gas sensing signal of each fan 2 is the same as the preset data, if the external control device 4 compares the data in the gas sensing signal of each fan 2 with the preset data. The external control device 4 does not control the rotation speed of the fans 2, and at this time, the air outlet side 222 of the fan 2 as a whole flows out a uniform airflow to effectively reduce the noise. If the external control device 4 compares the data (such as the wind pressure data) in the gas sensing signal of the at least one fan 2 (such as the two fans 2) with the preset data, the external control device 4 is configured according to the The preset data (such as the preset wind pressure data) is used as a reference to control the rotation speed of the two fans 2 that are different from the preset data, thereby changing the gas pressure of the gas blown by the fan 2, and adjusting all the fans 2 (that is, such The gas sensing signal of the fan 2) is the same as the preset data, so that the air outlet side 222 of the fan 2 flows out of the uniform airflow, and the entire flow field of the air outlet side 222 of the fan 2 can also be reached. Uniform, to avoid eddy currents, and effectively achieve the effect of reducing noise. The preset data includes the preset wind pressure data. In another embodiment, the external control device 4 compares the data (such as wind pressure data) of the gas sensing signal transmitted by the gas sensing unit 3 of each fan 2 to compare all the fans. 2, that is, the wind pressure data of the gas sensing signals of the fans 2 are the same, and if the external control device 4 is the same as the data in the gas sensing signals of the fans 2, the external control device 4 The rotation speed of the fans 2 is not controlled. At this time, the air outlet side 222 of the fan 2 as a whole flows out a uniform airflow to effectively reduce the noise. If the external control device 4 has data (such as wind pressure data) in the gas sensing signals of the fans 2, there is information in the gas sensing signal of at least one of the fans 2 (such as 2 fans 2) (such as wind) If the pressure data is different, the external control device 4 uses the data in the gas sensing signal of most of the same fan 2 as a reference to control the rotation speed of a few different fans 2 (such as 2 fans 2) to change the fan. 2 The gas pressure of the blown gas is adjusted until the data in the gas sensing signals of all the fans 2 (i.e., the fans 2) are the same, and the air outlet side 222 of the fans 2 is caused to flow a uniform airflow. Therefore, the design of the heat dissipation system of the present invention makes it possible to improve the uneven wind speed of the air outlets of the plurality of fans 2 on the conventional cabinet, and to achieve the effect of reducing noise. Please refer to the first and fourth embodiments, which are schematic diagrams of a second embodiment of the present invention, and are supplemented with reference to the 5A, 5B, and 5C diagrams. The structure, the connection relationship, and the functions of the embodiment are substantially The foregoing first embodiment is the same and will not be described again here. In this embodiment, the gas sensing unit 3 of the first embodiment is replaced with a wind speed sensor for the pressure sensor, and the wind pressure data included in the preset data is replaced with a preset wind speed data. In the specific implementation, the preset data may also include preset wind speed data and wind pressure data. And each gas sensing unit 3 is configured to detect a gas state corresponding to each fan 2 (such as a gas wind speed blown by an air outlet side of each fan) to generate the gas sensing signal, and the foregoing gas sensing The data in the signal includes the aforementioned wind speed data, and the preset data includes the preset wind speed data. Therefore, the external control device 4 compares the data (such as wind speed data) in the gas sensing signal transmitted by the gas sensing unit 3 with the preset data (such as preset wind speed data) to compare Whether the wind speed data in the gas sensing signal of each fan 2 is the same as the preset data, and if the external control device 4 compares the data in the gas sensing signal of each fan 2 with the preset data, the The external control device 4 does not control the adjustment of the rotational speed of the fans 2. At this time, the air outlet side 222 of the fans 2 as a whole flows out a uniform airflow to effectively reduce the noise. If the external control device 4 compares the data (such as the wind speed data) in the gas sensing signal of the at least one fan 2 (such as the two fans 2) with the preset data, the external control device 4 according to the pre-control Set the data (such as the preset wind speed data) as a reference to control the rotation speed of the two fans 2 that are different from the preset data to change the wind speed of the gas blown by the fan 2, and adjust all the fans 2 (ie, the fans 2) The gas sensing signal has the same data as the preset data. At this time, the air outlet side 222 of the fan 2 flows out of the uniform airflow, and the flow field of the air outlet side 222 of the fan 2 can be evenly distributed. In order to avoid the occurrence of eddy currents, the effect of reducing noise can be effectively achieved. Please refer to FIG. 4A for a perspective view of a third embodiment of the present invention, and with reference to FIGS. 1, 5A, 5B, and 5C, the structure, the connection relationship, and the efficacy of the embodiment are substantially The foregoing first embodiment is the same and will not be described again here. The difference between the two is that each of the gas sensing units 3 includes a microcontroller (MCU) 31, a pressure sensor 32, and a temperature sensor 33. The pressure sensor 32 is configured to detect corresponding The wind pressure of the air blown (or out) on the air outlet side of the fan 2 to generate a wind pressure sensing signal, the temperature sensor 33 is configured to detect the ambient temperature corresponding to the fan 2 to generate a temperature sensing a signal, the microcontroller 31 calculates an ambient temperature value based on a temperature value of the temperature sensing signal and a calibration data, and the ambient temperature value is further processed with a wind pressure value of the wind pressure sensing signal. That is, the microcontroller 31 receives the temperature value (uncompensated temperature value) of the temperature sensing signal and the correction data to obtain a compensated ambient temperature value (or a true ambient temperature value), and then The microcontroller 31 performs an arithmetic processing on the compensated ambient temperature value and the wind pressure value of the wind pressure sensing signal to generate the gas sensing signal to be transmitted to the external control device 4. And the data in the gas sensing signal includes a corrected wind pressure data, and the preset data includes the preset wind pressure data. Wherein the correction data is a correction coefficient for correcting the temperature value corresponding to the temperature sensing signal; and the manufacturer performs a test procedure to obtain a correction coefficient of each gas sensing unit 3 manufactured, and the correction data is built-in. A memory (such as random access memory (RAM), read only memory (ROM), electronic erasable programmable read only memory (EEPROM), flashing stored in each gas sensing unit 3 Memory or other memory; not shown in the figure). Therefore, the sensing unit 3 with temperature compensation can achieve a more accurate sensing effect. Please refer to FIG. 6 for a block diagram of a fourth embodiment of the present invention, and reference is made to the drawings of FIGS. 1, 5A, 5B, and 5C. The structure and the connection relationship of the present embodiment and the functions thereof are substantially the same as those of the foregoing first embodiment, and therefore will not be described again herein. This embodiment mainly redesigns the external control device 4 of the foregoing first embodiment by each fan. The processing unit 21 in the second embodiment is replaced by a processing unit 21, which is provided with a processing unit 21 and a circuit board (not shown). The processing unit 21 can be a processor (Central processing unit). , a CPU or a microcontroller (MCU) for controlling the operation of the fan 2, and the processing unit 21 is disposed on the circuit board. The processing unit 21 of each fan 2 is electrically connected to the corresponding gas sensing unit 3, and the processing unit 21 of each fan 2 performs the comparison processing according to the gas sensing signals transmitted by the respective gas sensing units 3. Aligning whether the internal wind pressure data of the gas sensing signal is the same as a preset data (such as preset wind pressure data), if the processing unit 21 of each fan 2 compares the respective gas sensing signals The internal data (such as the wind pressure data) is the same as the preset data, and the processing unit 21 of each fan 2 does not control the rotation speed of each of the fans 2, because the preset data in each fan 2 is In the same way, the air outlet side 222 of the fan 2 as a whole flows out a uniform airflow to effectively achieve the effect of reducing noise. The preset data includes preset air volume data, preset wind speed data and preset wind pressure data. If the processing unit 21 of the two fans 2 is different from the data in the respective gas sensing signals (such as wind pressure data) and the preset data (such as preset wind pressure data), the processing of the two fans 2 The unit 21 controls the adjustment of the rotation speed of the respective fans 2 to change the gas pressure of the gas blown by the fan 2 according to the preset data, and the processing units 21 of the two fans 2 adjust themselves to the same gas sensing signals. Based on the preset data, the air outlet side 222 of the fan 2 as a whole flows out a uniform airflow to avoid eddy current generation, thereby effectively achieving the effect of reducing noise. In another embodiment, each of the gas sensing units 3 is replaced with a wind speed sensor for the pressure sensor, and the wind pressure data design included in the preset data is replaced with a preset wind speed data, that is, Each of the gas sensing units 3 is configured to detect a gas state corresponding to each fan 2 (such as a gas wind speed blown by the air outlet side 222 of each fan 2) to generate the gas sensing signal and the foregoing gas sense. The data in the test signal includes the aforementioned wind speed data, and the preset data includes the preset wind speed data. In another embodiment, as shown in FIG. 6A, each of the gas sensing units 3 includes a microcontroller (MCU) 31, a pressure sensor 32, and a temperature sensor 33. The pressure sensor 32 is used by the pressure sensor 32. The wind pressure of the air blown (or flowed out) corresponding to the air outlet side 222 of the fan 2 is detected to generate a wind pressure sensing signal, and the temperature sensor 33 is configured to detect the ambient temperature corresponding to the fan 2, To generate a temperature sensing signal, and the microcontroller 31 performs a calculation process on the temperature value (uncompensated temperature value) of the temperature sensing signal and the calibration data to obtain a compensated ambient temperature value (or The actual ambient temperature value is then calculated by the microcontroller 31 to calculate the ambient temperature value of the wind pressure sensing signal and the wind pressure sensing signal to generate the gas sensing signal to the corresponding fan 2 . In an alternative embodiment, the microcontroller 31 of the gas sensing unit 3 described above may also be omitted, replacing the arithmetic processing with the processing unit 21 of the respective fan 2. And the data in the gas sensing signal includes a corrected wind pressure data, and the preset data includes the preset wind pressure data. Wherein the correction data is a correction coefficient for correcting the temperature value corresponding to the temperature sensing signal; and the manufacturer performs a test procedure to obtain a correction coefficient of each gas sensing unit 3 manufactured, and the correction data is built-in. A memory (such as random access memory (RAM), read only memory (ROM), electronic erasable programmable read only memory (EEPROM), flashing stored in each gas sensing unit 3 Memory or other memory; not shown in the figure). Therefore, the sensing unit 3 with temperature compensation can achieve a more accurate sensing effect. Therefore, the design of the heat dissipation system of the present invention makes it possible to improve the uneven wind speed of the air outlets of the plurality of fans 2 on the conventional cabinet, and to achieve the effect of reducing noise.

1‧‧‧ body
11‧‧‧Installation
111‧‧‧Mounting holes
13‧‧‧ Included space
2‧‧‧fan
21‧‧‧Processing unit
22‧‧‧ frame
221‧‧‧wind side
222‧‧‧wind side
23‧‧‧ flow path
24‧‧‧fan wheel
3‧‧‧Gas sensing unit
31‧‧‧Microcontroller
32‧‧‧ Pressure Sensor
33‧‧‧Temperature Sensor
4‧‧‧External control device

Figure 1 is a perspective view showing the combination of the heat dissipation system of the present invention. Fig. 1A is a schematic view showing the embodiment of the heat dissipation system of the present invention. Figure 2 is an exploded perspective view of the heat dissipation system of the present invention. Figure 3 is a front elevational view of the heat dissipation system of the present invention. Figure 4 is a block diagram showing the first and second embodiments of the present invention. Figure 4A is another block diagram of a third embodiment of the present invention. Figure 5A is a schematic cross-sectional view showing the combination of the fan and the gas sensing unit of the present invention. Figure 5B is a schematic cross-sectional view showing another combination of the fan and the gas sensing unit of the present invention. Figure 5C is a schematic cross-sectional view showing another combination of the fan and the gas sensing unit of the present invention. Figure 6 is a block diagram showing a fourth embodiment of the present invention. Figure 6A is another block diagram of a fourth embodiment of the present invention. Figure 7 is a schematic diagram of a conventional implementation of a heat dissipation system.

1‧‧‧ body

11‧‧‧Installation

111‧‧‧Mounting holes

2‧‧‧fan

22‧‧‧ frame

222‧‧‧wind side

3‧‧‧Gas sensing unit

Claims (19)

A heat sensing system with gas sensing, comprising: a body having at least one mounting surface and a receiving space; a plurality of fans disposed on the corresponding mounting surface and opposite to the receiving space; the plurality of gas sensing units Provided on a corresponding fan, each gas sensing unit is configured to detect a gas state corresponding to each fan to generate a gas sensing signal; and an external control device is connected to the fan and The gas sensing unit is configured to compare the data in the gas sensing signal transmitted by the gas sensing unit with a predetermined data, and compare the gas sensing signals of at least one of the fans. The internal data is different from the preset data, and the external control device controls to adjust the rotational speed of at least one of the aforementioned fans. The gas sensing heat dissipation system of claim 1, wherein each of the fans is provided with a frame body and a fan wheel, and the frame body has an air inlet side, an air outlet side and a first-class track. The flow channel is located between the air inlet side and the air outlet side, and the air inlet side communicates with the air outlet side, the flow channel and the receiving space, and the fan wheel is received in the flow channel of the frame body. The gas sensing heat dissipation system according to claim 2, wherein the gas sensing unit is disposed on the inner side of the frame at the air outlet side or the air inlet side. The gas sensing heat dissipation system of claim 2, wherein the gas sensing unit is disposed on an inner side of the frame in the flow channel. The heat-dissipating system with gas sensing according to claim 1, wherein the external control device is disposed in a receiving space of the body, and is located in a corresponding fan, and the external control device is a notebook type A computer or a smart mobile device or a computer. The gas sensing heat dissipation system of claim 3, wherein each of the gas sensing units is a wind speed sensor for detecting a gas velocity corresponding to the fan. The gas sensing signal is generated, and the data in the gas sensing signal includes a wind speed data, and the preset data includes a preset wind speed data. The gas sensing heat dissipation system of claim 3, wherein each of the gas sensing units is a pressure sensor for detecting a gas pressure corresponding to the fan. The gas sensing signal is generated, and the data in the gas sensing signal includes a wind pressure data, and the preset data includes a preset wind pressure data. The gas sensing heat dissipation system of claim 3 or 4, wherein each of the gas sensing units comprises a microcontroller, a pressure sensor and a temperature sensor, the pressure sensing The device is configured to detect a wind pressure corresponding to the fan to generate a wind pressure sensing signal, and the temperature sensor is configured to detect a temperature corresponding to the ambient temperature of the fan to generate a temperature sensing signal, and the microcontroller is configured according to the Calculating a temperature value of the temperature sensing signal and a calibration data to obtain an ambient temperature value, and the ambient temperature value is further processed with a wind pressure value of the wind pressure sensing signal to generate the gas sensing signal, and The data in the gas sensing signal includes a corrected wind pressure data, and the preset data includes a preset wind pressure data. The gas sensing heat dissipation system of claim 1, wherein the external control device is the same as the preset data if the data in the gas sensing signal of the fan is the same as the preset data. Do not control the speed of these fans. The heat-dissipating system with gas sensing according to the first aspect of the invention, wherein the mounting surface has a plurality of mounting holes, the mounting holes penetrating the mounting surface, and connecting the receiving space, the fan mounting In the corresponding installation hole. A heat dissipation system with gas sensing, comprising: a body having at least one mounting surface and a receiving space; a plurality of fans disposed on the corresponding mounting surface and opposite to the receiving space, each fan a processing unit is provided for controlling the driving of the fan; a plurality of gas sensing units are disposed on the corresponding fans, and each of the gas sensing units is configured to detect a gas state corresponding to each fan to generate a a gas sensing signal, and each of the gas sensing units is connected to the processing unit of each of the fans; and the processing unit of each of the fans is configured according to the data in the gas sensing signal transmitted by the respective gas sensing unit Comparing with a preset data, if each processing unit compares the data in the respective gas sensing signals with the preset data, the control adjusts the rotation speed of each of the fans. The heat-dissipating system with gas sensing according to claim 11, wherein each fan is provided with a frame body and a fan wheel, and the frame body has an air inlet side, an air outlet side and a first-class track. The flow channel is located between the air inlet side and the air outlet side, and the air inlet side communicates with the air outlet side, the flow channel and the receiving space, and the fan wheel is received in the flow channel of the frame body. The gas sensing heat dissipation system according to claim 12, wherein the gas sensing unit is disposed on the inner side of the frame at the air outlet side or the air inlet side. The gas sensing heat dissipation system of claim 12, wherein the gas sensing unit is disposed on an inner side of the frame in the flow channel. The gas sensing heat dissipation system of claim 11, wherein the processing unit is a processor or a microcontroller. The heat-dissipating system with gas sensing according to claim 11, wherein the mounting surface has a plurality of mounting holes, the mounting holes penetrating the mounting surface, and connecting the receiving space, the fan mounting In the corresponding installation hole. The gas sensing heat dissipation system of claim 13 or 14, wherein each of the gas sensing units is a wind speed sensor, and the wind speed sensor is configured to detect a gas velocity corresponding to the fan. The gas sensing signal is generated, and the data in the gas sensing signal includes a wind speed data, and the preset data includes a preset wind speed data. The gas sensing heat dissipation system of claim 13 or 14, wherein each of the gas sensing units is a pressure sensor for detecting a gas pressure corresponding to the fan. The gas sensing signal is generated, and the data in the gas sensing signal includes a wind pressure data, and the preset data includes a preset wind pressure data. The gas sensing heat dissipation system of claim 13 or 14, wherein each of the gas sensing units comprises a microcontroller, a pressure sensor and a temperature sensor, the pressure sensing The device is configured to detect a wind pressure corresponding to the fan to generate a wind pressure sensing signal, and the temperature sensor is configured to detect a temperature corresponding to the ambient temperature of the fan to generate a temperature sensing signal, and the microcontroller is configured according to the Calculating a temperature value of the temperature sensing signal and a calibration data to obtain an ambient temperature value, and the ambient temperature value is further processed with a wind pressure value of the wind pressure sensing signal to generate the gas sensing signal, and The data in the gas sensing signal includes a corrected wind pressure data, and the preset data includes a preset wind pressure data.